Bit-gage



(Model.)

W. H. KING.

Bit Gage.

No. 242,656. Patented Ju'e 7, 1881,

UNITED YSTATES PATENT OFFICE.

YV. HASKELL KING, OF ATHOL, MASSAGHUSETTS.

BIT-GAGE.

SPECIFICATION forming part of Letters Patent No. 242,656, dated June '7, 1881.

Application sled April 6,1981. (Model.)

To all whom 'it may concern.

Be it known that I, W. HAsKELL KING, a citizen ofthe United States, residing at Athol, ill the county ot' Worcester and State of Massachusetts, have invented new and useful Improvenlents in Bit-Stops, of which the following is a speciiieation.

The object of my invention is to enable any number of holes of uniform depth to be bored by a bit or auger without separate measurements, this being accomplished by securing upon the bit or auger a stop to limit the penetration ot' the sameto thedesired point, as hereinafter particularly described with reference tothe accompanying drawings, in which- Figure 1 is a viewof an auger-bit with astop applied thereto according to my invention. the stop detached.

The stop A consists of a metallic band, preferably of about the diameter of the bit upon which it is to be used. From one edge of the band there projects a nose, B, the outer surface, a, ot' which is flat. The band is preferably thickened at one side, and through the thickened portion is tapped a screw-hole, in which is arranged a thumb-screw, C, the shank of which is adjustable radially in the opening of the band.

In using the stop it is slipped over the end ot th'ebit alld adjusted to the desired point, and then the screw is turned ill until its tip bears against the broad face ot' one of the bit threads or spirals, as shown in Iiig. l. The

band is not necessarily of the same, or near the same, diameter ot' the bit, as the screw will hold the stop in place'upon a bit of any size which it can receive. The stop being secured Figs. 2 and 3 are perspective views ot"4 turning of the bit gives notice to the operator.

rIhe thickened part ot' the band is made narrower than that portion from which the nose B projects in order to afford room fior the es# cape ot chips, which will be brushed to one side by the nose as it nears the surface ofthe material.

I am aware that auger-stops have been used composed ot' a pair of jaws hinged or pivoted together and piovided with a locking device for attachment to the auger, one-of the jaws` being provided with all adjustable plate to enable the stop to be adjusted to augers of dit'- ferent sizes, and the stop being provided with legs to allow the escape ot' chips during the process of boling, and I do not clailn such an auger-stop.

The bit'stop herein described, consisting ot' the balld A, of a single piece, provided at one side of its lower edge with all outwardly-pro` jectiug nose, B,having a flat lower face, a, said band being narrowed toward the side opposite the nose, and having a laterally-thickened portion provided with a radially-adjusta ble thumb-screw, U, substantially as shown and described.

In testimony whereof I have hereunto set my hand in the presence ot' two subscribing witnesses.

W. HASKELL KING.

Witnesses Trios. O. GINKTNGEE,

WM. H. SMITH. 

